87981010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{15739}}^1$

素因数の和:15802

約数の個数: 32

約数和(自身を含む): 174525120

約数和(自身を除く): 86544110

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 130, 215, 430, 559, 1118, 2795, 5590, 15739, 31478, 78695, 157390, 204607, 409214, 676777, 1023035, 1353554, 2046070, 3383885, 6767770, 8798101, 17596202, 43990505, 87981010]

約数ペア:

[(1, 87981010), (2, 43990505), (5, 17596202), (10, 8798101), (13, 6767770), (26, 3383885), (43, 2046070), (65, 1353554), (86, 1023035), (130, 676777), (215, 409214), (430, 204607), (559, 157390), (1118, 78695), (2795, 31478), (5590, 15739)]